Interacting with structured data
Many existing CICS applications are centered around the use of structured data records, which are typically stored as sequential files in the Virtual Storage Access Method (VSAM) data set or as DB2 tables. The structured data is usually described using a COBOL copybook that conforms to COBOL levels, naming conventions, and data types. This copybook is then used as the interface to the data itself, because it defines the data types, and offsets within the data for the individual fields in the record.
When developing ...
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